Automatic train control



March 3, 1931. Q- A, Ross 1,794,549

AUTOMATIC TRAIN CONTROL Original Filed Deo. 28, 1921 FIGA.

24 2.5 E 6 l5 z2 ,V :o le 9 2 ,2a l5 i O INVENTOR R S l OSS 32 31 BY Cc.' A

*,MQNE'Y iaerfed Mar. 1?, 1931 OSCAR rnizoss, 0F NEW Yoiziiif. Y., AssiGNoB To GENERAL RAiLwAYsiGNAL CoM- PANY, 0F GATESNEW YORK, A CORPORATION oF NEW YQRK CONTROL Original application led December 2S, 1321, Serial No. 5 5,508, i Divided and this applcation filed .July 16, 1928. -Serial No. 293,047..

rails Wherebynthe creeping or other more,y f niente `Iof the ifailsqyill. not interfere `with piopei.fuiioti0niiig. ofthe devices employed. ThisV application ,is aA division of .my prior applicatioii- Ser., No. 525,508 filed; December..

Themas it is obyioufithat those skilled in the art ii'iayriiake modifica-tions not ldeparting 'from the spiritof .my invention, I have shown my preferred` form iii the accompanying rlrawings in which; y y

Fig. 1,-is apart plan, 'pui-t sectional Yiew. ot my invention auappliedio atrackway 2,-is a. partiplaii, paitscetioiial yView takennn; the lline E-Eof Fig.l l v Fig. 3, isa plan View ila-lien on linefFHF of Figa' i Fige, is anenlargeii .plan yiew ot part of the magneticfcoreof ,the track element-g..

Fig. 5, :fi section Online (ir- G of Fige; and

Refeli lng in. detail to :the .va riou" figures in which line; numeral@-l refer to like refer.-V

tlie Several drawings, Z is a track eleinniitcempnisiiig amagiietic core l, on which is shown a coil 2, liaviiiglfeadg 3f clamped to external leads l4, vby connectors 5 5. Fxteriial leads -f. enter through 'conduit 5 Secured-.to plate 7 suitably secured .to end hlocl; 8.;of=traclr element Z. VAl/Iagnet core 1 and its coil 2 arewitli the exception oie core ends .Q1- 9. co-iiipletelyhousedb p and .bot tom plaesl() and il, side plates 12. zin-,d 13. and. end blocks 8 and iii, all of which are held together Eby.suitable bola and SCiTeXSl-l.

3' T he 1iiiagiiet core i and coil-2 are notoniy4 lo.-

liloclr ..Nif-1.8, lkalnd tipp..

10 and il.y is; proyided. i* lioie 2.1 liliteclwirh clearly thisA `coiiipoulrir cated and braced., by core curls 9 5) 'iasing;

through the top plate 10. butl also by block.:

iii-16. and .1T-?. fill the plates and Lloelr..l i

forniingthe housing and bracefor corel. are of nonflnagiietic material., i

To facilitate iiiakiig .coi'niiectionrs to .learlrs :v-Soi coil 2 u compartment 20, formed by ncl bottom plates;

Vnre secured. to rails E24-.24 by clamps 28-f28, ksimil clumps beingarranged 59 that when bolle.

29 w.29 are tightened, .the tiac'k'r.. ils 24,. yoke 27, and clamps 28 .and 28.bec'o1nefa. olirl. niein.- I

ber acting'v as naddle on each rail..r in which member?, is helflthrough springe. zSZW-2,6, the upper ends .of which im inve on the )lates 30 l .r c v. 1 secured to bottom-plateLlL To economically produce the magneticcore i. he laminatioiis are asgembledas shown by Figs. 4l, 5. anelli, each alternate lami,... tion 32, abuttiny ,an end lamination 34. with cnil lan'iiiiatioiis abutting lffiimnations 01.

All of; the rapace in member Z, n i.' )ccui by essentizhparts, is lil th. Ursula Compound .60 through apertures (S9-iii?.

This doespiiot apply,toconipariiiient 20., Fm'.

the puriiqeeof illustr fing Severall parte.

as... imed to be liarsparent.

n n 1 In Fig. 4, the iamiiiations are tirar/n tliiciiei 'than ordinarily empio;A .d in practice so as to clearlyiiidicate their, assembly. I The lamina? Ation 31 i 32, ariel 34 are laniped into unit ,forming core l by plates 73-73 and bo`tf= 74, the units of which are electrically ii.-

.eulatefl in. any well iinoivn manner to prevent -edcly currents ne the iuxvsurges throng-"ii magnet core 1.

lll

I have discovered that due to vibration from passing vehicles the track element Z cannot be rigidly secured to rails 24-24, for if so secured, the creeping and other movements of the rails will soon work it loose, causing poor magnetic contact with the rails. Ass the track circuit is the well known basis for operating automatic train control or other forms of signalling, it is obvious that magnetic core l, cannot be welded thereto, as it would cause a short circuit.

ll'hat I claim is I. As a container for the track magnet of an inductive train control system for a railway, the combination of top and bottom plates, side plates and end plates with means for rigidly connecting all of the plates together to form a hollow structure containing a track magnet and coil therein, one of said end plates being formed with an orifice and all of the free space of the' container being filled with an insulating compound except a cavity adjacent to and connecting with the said orifice, and terminal strips in said cavity.

Q. As a track element of an inductive train control system for a railway having rails the combination of a track magnet disposed transversely of the rails and positioned with one end adjacent one rail and the other end adjacent the other rail and each end separated from its adjacent rail by non-magnetic material, an electric conducting coil having terminals disposed on the magnet intermediate its ends, a water tight container enclosing the magnet and coil, except adjacent the ends of the magnet in proximity to the rails, terminal strips within the containerconnected to the. terminals of the coil, said container formed with an orifice and filled with an insulating compound except a cavity communicating with the orifice and containing the terminal strips, means for reaching the cavity from without the container and means for connecting the conduit to said orifice.

As a track element of an inductive train control system for a railway having rails, the combination of a track magnet disposed transversely of the rails and positioned with one end adjacent one rail and the other end adjacent the other rail and each end separated from its adj acent rail by non-magnetic material, an electric conducting coil having terminals disposed on the magnet intermediate its ends, a water tight container enclosing the magnet and coil, except adjacent the ends of the magnet in proximity to the rails, terminal strips within the container connected to the terminals of the coil,'said container formed with an orifice and filled with an insulating compound except a cavity communicating with the orifice and containing the terminal strips, means for reaching the cavity from without the container, means for connecting a conduit to said orificenmd means for resiliently connecting the container to the underside of the rails.

4c. As a means for supporting a track magnet adjacent the underside of a rail, the combination of two stirrups spaced apart and attached to the rail and extending downwardly therefrom, and a yoke having two ends one resting in each stirrup, and a spring resting on the yoke and disposed to hold the magnet adjacent the underside of the rail.

5. In combination with a railway track consisting of rails and ties for supporting the same.; of an inductive trackway device cent said rails and having a predetermined and fixed relation to said rails independent of relative movement of rails and ties for transmitting inductive control influences to a passing railway vehicle comprising', a core of laminated magnetic material terminating in poles, a coil on said core, a housing of non-magnetic material enclosing said core and coil except the pole faces of said core, an opening in said casing having a conduit connected thereto, and wires connected to the ends of said coil and contained in said conduit.

6. An influence communicating element for automatic train control system comprising, a core consisting of a' stack of laminae of mag-- netic material, clamps surrounding said core at points adjacent to its ends, a coilion said core between said clamps, and a casing of non-magnetic material for housing said core and coil, said casing having openings through which the ends of said core extend.

7. Influence communicating means for automatic train control systems comprising, a core of laminated magnetic material terminating in pole faces, a coil on said core having lead-out wires leading therefrom, a. casing of non-magnetic material for housing said core and coil having a compartment associated therewith containing an opening extending into said casing and having a wire conduit extending therefrom, wires in said conduit, and readily detachable wire connecting means in said compartment for connecting said lead-out wires to the wires in said conduit. A

8. Influence crsm'inumicating means for automatic train control systems comprising, a core of laminated magnetic material terminating in extensions having pole faces, a coil on said core, a casing of non-magnetic material for housing said core and having openings through which said extensions project, and means for wholly supporting said casing directly by the rails of a railway track, whereby the space relation between the track rails and said core' is permanently fixed.

9. A track magnet, for train control sysY tems, in the general form of an elongated rectangular bar with end portions thereon at substantially right angles to the length ofthe bar, the'bar boing made up of alternately long and Short longitudinal lal'ninae with the end portions made up o'l alternately short and tall laininay positioned in contact with the top tarea. and end tarea. respeetively, oi" the Aunid longitudinal laminati, and means Jfor rigidly holding all ot the laminae together.

10. For use in train control systems, a traek magnet having the general form of a rectangula r bar formed with an end at right angle4 thereto at eaeli end. each end being built up of relatively thin lalninze of relatively large dimensions longitudinally and relatively small ditnenaiona transversely, and other lamina; ot' relatively large dimensions longitudinally and Substantially tlie same dimenlioneA transversely.

In. testimony whereof I atlix my signature.

OSCAR ROSS. 

